Abstract
AbstractWe examined the ability of 5 a priori landscape classifications (3 sizes of catchments, ecoregions, and life zones) to partition observed variation in the composition of stream invertebrate assemblages. Analyses were based on 254 unimpaired sites from montane streams in California and 1912 sites from several regions of the United States. Estimates of classification strength (CS) were used to measure how well classifications partitioned variation in composition among sites. CS was measured as the difference between overall weighted mean within-class compositional similarity (W) and mean between-class similarity (B). We compared CSs of the 5 a priori classifications with post hoc classification of sites based on cluster analysis of the pair-wise similarities among sites. The latter, a posteriori, classification was assumed to represent a near-optimal partitioning of W and B, and thus the maximum CS possible. Additional analyses were conducted to determine if level of taxonomic resolution (genus ...
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the North American Benthological Society
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
